Journal ArticleDOI
Dual Photoionization Source-Based Differential Mobility Sensor for Trace Gas Detection in Human Breath
TLDR
A dual ultraviolet photoionization source-based compact differential mobility sensor (DMS) for detection of trace VOCs, such as acetone and hexane, was proposed in this paper.Abstract:
Trace concentrations of volatile organic compounds (VOCs) in human exhale have been reported for their potential as biomarkers for detection and monitoring of various disease states. This paper discusses design of a dual ultraviolet photoionization source-based compact differential mobility sensor (DMS) for detection of trace VOCs, such as acetone and hexane. The DMS sensor demonstrated a sub-parts per million level detection limit for acetone and hexane as estimated for signal-to-noise ratio of 3. Results of experiment performed for detection of trace concentrations of acetone in human exhaled air from a few normal and diabetic volunteers are also described. It was observed that acetone concentration in human breath for the volunteers show good correlation with blood glucose measurements as recorded with glucometer.read more
Citations
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Journal ArticleDOI
An Energy-Efficient Multimode Multichannel Gas-Sensor System With Learning-Based Optimization and Self-Calibration Schemes
Kyeonghwan Park,Subin Choi,Hee Young Chae,Chan Sam Park,Seungwook Lee,Yeongjin Lim,Heungjoo Shin,Jae Joon Kim +7 more
TL;DR: This paper presents an energy-efficient intelligent multisensor system for hazardous gases, whose performance can be adaptively optimized through a multimode structure and a learning-based pattern recognition algorithm.
Journal ArticleDOI
A Novel 1-D Convolution Neural Network With SVM Architecture for Real-Time Detection Applications
S. Lekha,M. Suchetha +1 more
TL;DR: This paper proposes to develop a modified deep learning convolution neural network algorithm integrated with support vector machines to address the drawbacks present in multi-layer perceptron and thereby improving the overall performance of real-time detection applications.
Journal ArticleDOI
Wideband microwave multiport-based system for low gas concentration sensing and its application for acetone detection
TL;DR: In this paper, an optimized transmission line type sensor coated with a thin film that changes electrical properties under target gas exposure is developed, namely its reflection coefficient is measured using a novel wideband multiport reflectometer.
Journal ArticleDOI
Glucose sensing in oral mucosa simulating phantom using differential absorption based frequency domain low-coherence interferometry.
TL;DR: The superluminescent diode based differential absorption frequency domain low-coherence interferometry (FD-DALCI) technique is proposed and demonstrated for sensing physiological concentrations of glucose in oral mucosa simulating phantoms with wavelengths at 1589 and 1310 nm.
Journal ArticleDOI
Catalysis-Based Cataluminescent and Conductometric Gas Sensors: Sensing Nanomaterials, Mechanism, Applications and Perspectives
TL;DR: In this article, two representative catalysis-based gas sensors, cataluminescent and conductometric sensors, the basis of optical and electric signal acquisition, respectively, are summarized comprehensively.
References
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Breath Analysis Using Laser Spectroscopic Techniques: Breath Biomarkers, Spectral Fingerprints, and Detection Limits
Chuji Wang,Peeyush Sahay +1 more
TL;DR: An update on the latest developments in laser-based breath analysis is presented, finding that laser spectroscopic detection techniques not only have high-sensitivity and high-selectivity, as equivalently offered by the MS-based techniques, but also have the advantageous features of near real-time response, low instrument costs, and POC function.
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Breath Analysis: Potential for Clinical Diagnosis and Exposure Assessment
Wenqing Cao,Yixiang Duan +1 more
TL;DR: The potential applications of breath tests, including clinical diagnosis of diseases and monitoring of environmental pollutant exposure, with emphasis on oxidative stress, lung diseases, metabolic disorder, gastroenteric diseases, and some other applications are described.
Journal ArticleDOI
Breath acetone monitoring by portable Si:WO3 gas sensors
Marco Righettoni,Antonio Tricoli,Samuel Gass,A Schmid,A Schmid,Anton Amann,Anton Amann,Sotiris E. Pratsinis +7 more
TL;DR: In this paper, a portable sensor consisting of flame-deposited and in situ annealed, Si-doped epsilon-WO(3) nanostructured films was developed.
Journal ArticleDOI
Quantitative breath analysis of volatile organic compounds of lung cancer patients.
Geng Song,Tao Qin,Hu Liu,Guo-Bing Xu,Yueyin Pan,Fu-xing Xiong,Kangsheng Gu,Guoping Sun,Zhen-dong Chen +8 more
TL;DR: The data showed that 1-butanol and 3-hydroxy-2-butanone in breath could possibly be taken as useful breath biomarkers for discerning potential lung cancer patients and VOCs analysis could be used as a complementary test for the diagnosis of lung cancer.
Journal ArticleDOI
A Study on Breath Acetone in Diabetic Patients Using a Cavity Ringdown Breath Analyzer: Exploring Correlations of Breath Acetone With Blood Glucose and Glycohemoglobin A1C
Chuji Wang,A. Mbi,M. Shepherd +2 more
TL;DR: Relations between breath acetone and BG, A1C, and several other bio indices, such as the type of diabetes, onset-time, gender, age, and weight were investigated.